Yeah, I've never used LW (for more than 5 mins) so I'm not sure about the function, but there'll be a setting on lathe to ask you how many steps you need. Obviously, more steps, more polys. Also, never used "sketch" but I assume it just lets you draw a spline. Even eliminating a single point can rid you of hundreds or thousands of polys (because the lathe function will duplicate the spline around the Y axis). There's nothing you can do in Bryce about polys, though. Then again, thinking about it - I've just done a 3450x5250 render that required several very detailed lathe objects imported into Bryce, hugely subdivided with about 200 lathed steps, but the OBJ files were only about 1.7Mb each and only took about 5 seconds each to import. If your files are more than this for a simple lathe then there's something else amiss... <:#